acpienum.c

winNT技术操作系统,国外开放的原代码和LIUX一样

/* $Id: acpienum.c 21698 2006-04-22 05:55:17Z tretiakov $
 *
 * PROJECT:         ReactOS ACPI bus driver
 * FILE:            acpi/ospm/acpienum.c
 * PURPOSE:         ACPI namespace enumerator
 * PROGRAMMERS:     Casper S. Hornstrup ([e-mail])
 * UPDATE HISTORY:
 *      01-05-2001  CSH  Created
 */
#include <acpi.h>

#define NDEBUG
#include <debug.h>


#ifndef NDEBUG
static void
bm_print1 (
  BM_NODE *node,
  u32     flags)
{
  ACPI_BUFFER buffer;
  BM_DEVICE *device = NULL;
  char *type_string = NULL;

  if (!node)
  {
    return;
  }

  device = &(node->device);

  if (flags & BM_PRINT_PRESENT)
  {
    if (!BM_DEVICE_PRESENT(device))
    {
      return;
    }
  }

  buffer.length = 256;
  buffer.pointer = acpi_os_callocate(buffer.length);
  if (!buffer.pointer)
  {
    return;
  }

  acpi_get_name(device->acpi_handle, ACPI_FULL_PATHNAME, &buffer);

  switch(device->id.type)
  {
    case BM_TYPE_SYSTEM:
      type_string = "System";
      break;

    case BM_TYPE_SCOPE:
      type_string = "Scope";
      break;

    case BM_TYPE_PROCESSOR:
      type_string = "Processor";
      break;

    case BM_TYPE_THERMAL_ZONE:
      type_string = "ThermalZone";
      break;

    case BM_TYPE_POWER_RESOURCE:
      type_string = "PowerResource";
      break;

    case BM_TYPE_FIXED_BUTTON:
      type_string = "Button";
      break;

    case BM_TYPE_DEVICE:
      type_string = "Device";
      break;

    default:
      type_string = "Unknown";
      break;
  }

  if (!(flags & BM_PRINT_GROUP))
  {
    DbgPrint("+------------------------------------------------------------\n");
  }

  DbgPrint("%s[0x%02x] hid[%s] %s\n", type_string, device->handle, device->id.hid, buffer.pointer);
  DbgPrint("  acpi_handle[0x%08x] flags[0x%02x] status[0x%02x]\n", device->acpi_handle, device->flags, device->status);

  if (flags & BM_PRINT_IDENTIFICATION)
  {
    DbgPrint("  identification: uid[%s] adr[0x%08x]\n", device->id.uid, device->id.adr);
  }

  if (flags & BM_PRINT_LINKAGE)
  {
    DbgPrint("  linkage: this[%p] parent[%p] next[%p]\n", node, node->parent, node->next);
    DbgPrint("    scope.head[%p] scope.tail[%p]\n", node->scope.head, node->scope.tail);
  }

  if (flags & BM_PRINT_POWER)
  {
    DbgPrint("  power: state[D%d] flags[0x%08X]\n", device->power.state, device->power.flags);
    DbgPrint("    S0[0x%02x] S1[0x%02x] S2[0x%02x]\n", device->power.dx_supported[0], device->power.dx_supported[1], device->power.dx_supported[2]);
    DbgPrint("    S3[0x%02x] S4[0x%02x] S5[0x%02x]\n", device->power.dx_supported[3], device->power.dx_supported[4], device->power.dx_supported[5]);
  }

  if (!(flags & BM_PRINT_GROUP))
  {
    DbgPrint("+------------------------------------------------------------\n");
  }

  acpi_os_free(buffer.pointer);

  return;
}
#endif


NTSTATUS
ACPIEnumerateDevices(PFDO_DEVICE_EXTENSION DeviceExtension)
{
  BM_HANDLE_LIST HandleList;
  PACPI_DEVICE AcpiDevice;
  ACPI_STATUS AcpiStatus;
  BM_DEVICE_ID Criteria;
  BM_NODE *Node;
  KIRQL OldIrql;
  ULONG i;

  DPRINT("Called\n");

  RtlZeroMemory(&Criteria, sizeof(BM_DEVICE_ID));
  Criteria.type = BM_TYPE_ALL;

  AcpiStatus = bm_search(BM_HANDLE_ROOT, &Criteria, &HandleList);
  if (ACPI_SUCCESS(AcpiStatus))
  {
    DPRINT("Got %d devices\n", HandleList.count);

    for (i = 0; i < HandleList.count; i++)
    {
      AcpiStatus = bm_get_node(HandleList.handles[i], 0, &Node);
      if (ACPI_SUCCESS(AcpiStatus))
      {
        DPRINT("Got BM node information: (Node 0x%X)\n", Node);

        if ((Node->device.flags & BM_FLAGS_IDENTIFIABLE) &&
            (Node->device.id.hid[0] != 0))
        {
#ifndef NDEBUG
          bm_print1(Node, BM_PRINT_ALL - BM_PRINT_PRESENT);
#endif

          AcpiDevice = (PACPI_DEVICE)ExAllocatePool(NonPagedPool,
                                                    sizeof(ACPI_DEVICE));
          if (AcpiDevice == NULL)
          {
            return STATUS_INSUFFICIENT_RESOURCES;
          }

          RtlZeroMemory(AcpiDevice, sizeof(ACPI_DEVICE));

          AcpiDevice->Pdo = NULL;
          AcpiDevice->BmHandle = HandleList.handles[i];

          KeAcquireSpinLock(&DeviceExtension->DeviceListLock, &OldIrql);
          InsertHeadList(&DeviceExtension->DeviceListHead,
                         &AcpiDevice->DeviceListEntry);
          DeviceExtension->DeviceListCount++;
          KeReleaseSpinLock(&DeviceExtension->DeviceListLock, OldIrql);
        }
      }
      else
      {
        DPRINT("Could not get BM node\n");
      }
    }
  }
  else
  {
    DPRINT("Got no devices (Status 0x%X)\n", AcpiStatus);
  }

  return STATUS_SUCCESS;
}

/* EOF */